When configuring a restriction profile, we can set update delays for iOS, macOS major and macOS minor. Let the editing view preview what the expected offered version of a software update check would be, since it's relative to the age of the release.
For example, as I submit this, macOS 15.1 is 25 days old.
A minor deferral for 30 days would therefore yield devices finding 15.0.1
Deferral of 21 would offer 15.1.
Add a line under each setting that does this calculation, indicating that "as of today, the offered minor version would be X", which updates as the admin changes the delay value.